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Old 02-21-2012, 08:42 AM   #1
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302 block

I was wandering if u was lookin at a bare 302 block how can u tell if it is a roller cam block? Thanks
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Old 02-21-2012, 10:50 AM   #2
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Quote:
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I was wandering if u was lookin at a bare 302 block how can u tell if it is a roller cam block? Thanks
Do you know what year it came out of?
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Old 02-21-2012, 11:37 AM   #3
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Re: 302 block

IF THE INTAKES OFF ,look in the lifter valley .. you should see a bolt down steel retainer or spyder that holds the lifters in place ............
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Old 02-21-2012, 12:03 PM   #4
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Ok thanks. Idk what year it is. But it must be a older one cuz it don't have no spyder or nothin to hold the litters in. It looks like a old chevy 350 would. But it's been redone and has notched pistons in it. So is the pistons notched to accept bigger vavles or what ? And the harmonic balencer has sfi approved on it. I don't know what that means. If it means it's a fuelinjected or carb balencer
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Old 02-21-2012, 05:30 PM   #5
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If its a roller block it will have xxx casted on it in the lifter valley.
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Old 02-21-2012, 05:31 PM   #6
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Old 02-21-2012, 05:37 PM   #7
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Re: 302 block

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Originally Posted by Robbie94gt View Post
Ok thanks. Idk what year it is. But it must be a older one cuz it don't have no spyder or nothin to hold the litters in. It looks like a old chevy 350 would. But it's been redone and has notched pistons in it. So is the pistons notched to accept bigger vavles or what ? And the harmonic balencer has sfi approved on it. I don't know what that means. If it means it's a fuelinjected or carb balencer
SFI is a safety rating for racing. The balancer does not affect whether you are fuel injected or carbureted.


In the center of the lifter valley the two little bosses will have been drilled and tapped for the lifter guide if it is a roller cam block or it has been converted to a roller cam block.
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Old 02-21-2012, 05:45 PM   #8
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SFI is a safety rating for racing. The balancer does not affect whether you are fuel injected or carbureted.

In the center of the lifter valley the two little bosses will have been drilled and tapped for the lifter guide if it is a roller cam block or it has been converted to a roller cam block.
Can it be converted to roller block.
I thought the lifter holes were different lengths to accomodate the longer lifters.
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Old 02-21-2012, 05:57 PM   #9
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Re: 302 block

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Can it be converted to roller block.
I thought the lifter holes were different lengths to accomodate the longer lifters.
I don't know about the lifter bore differences, but I have read many times in magazines and otherwise that they can be converted.
It may also require a different lifter?
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Old 02-21-2012, 06:02 PM   #10
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maybe... i do know you can convert a roller to a non roller.but i dont see why anyone would do that unless your are going to run serious race only solid cam.
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Old 02-21-2012, 08:14 PM   #11
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Ok thanks guys. Dreamstang it looks like the one of the pic u posted. So r they better for more / easier horsepower per dollar vs a roller cam block. And y would somebody notch the pistons for.
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Old 02-21-2012, 08:40 PM   #12
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the one in the pic is a roller block.the rollers blocks are better.

---------- Post added at 08:40 PM ---------- Previous post was at 08:38 PM ----------

the reason to knotch pistons are for piston to valve clearance.the knotch on the piston will be placed in the area that the valve will open in.
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Old 02-21-2012, 09:02 PM   #13
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Ok. That's good to know. So do u notch them only when u put a bigger cam or biggervavles in ford factory casted heads.?
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Old 02-21-2012, 09:29 PM   #14
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exacly.bigger valves,cams etc. also when you go with bigger rocker arms they make the valves lift more.for instance my b303 cam make 480 lift with stock 1.6 rockers.i added 1.72 roller rockers so now i am lifting 516. my heads i bought say they are good for 540 lift so i was ok.but when i installed my heads i still checked piston to valve clearance because there are so many variables.like with more duration your valves will stay open longer which mean they will occupy the space in the cylinder for a longer time.
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Old 02-22-2012, 06:15 AM   #15
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Ok. Well said. That's what I thought. But didn't know all the logic behind it. Thansk
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